Agricultural implement



Patented Mar. 10, 1 942 AGRICULTURAL IMPLEMENT Judson A. Perry, Norfolk,

one-hundredths to Ge Norfolk, Va.

Va., assignor of fifty orge D. Whitehurst,

Application February a, 1939, Serial No. 254,488

3 Claims.

Generically, the present invention relates to agricultural devices and specifically has reference to a device for spraying liquid insecticides, or the like, upon plants, etc.

An objectof my invention is 'to provide an insecticide spraying device with a novel piston and cylinder construction for creating air pressure, within the source of insecticide.

Another object of the present invention is to provide a liquid insecticide spraying device having a piston and cylinder construction for creating air pressure wherein a frame is slidably mounted on the'cylinder to permit reciprocatory movement to be imparted to the piston.

More specifically, my invention provides a portable wheel barrow-like frame having mounted thereon a drum containing a liquid insecticide.

Also supported on theframe and in communication with the interior of the drum is a cylinder and piston device that is employed to create air pressure within the drum. A link is associated with the piston rod at its upper end and the lower extremity of the link is connected to a crank journaled in the frame. A chain is trained. over a pair of sprockets connectedpto the front axle and crank, respectively. When the chassis is moved, the rotation of the wheel will impart movement to the crank by reason of the sprocket and chain driving connection. Sunultaneously, the piston will be reciprocated in the cylinder as the link connected tothe piston is operatively associatedwith the crank.

In addition, a clutchis provided on the axle whereby the sprocket may be disconnected, thus enabling the chassis to be moved without operatingthe piston and cylinder device.

Furthermore, additional means are provided whereby the piston can be manually operated by the operator.

In the drawing in which like numerals represent the same orsimilar parts:

Figure 1 is a top plan viewof my invention.

Figure 2 is a longitudinal sectional view of th structure shown in Figure 1.

t Figure 3 is a front elevational view, partly in section, of the cylinder and piston and its operative parts.

Figure 4 is a fragmental sectional view of a portion of the piston rod and handle showing the manner in which the piston may be manually operated Referring to the drawing and more especially to Figure 1, I have depicted a frame or chassis I havingsuitably supported thereon a liquid inating air pressure 3. The frame I comprises a pair of arms 4 which converge at their forward ends as designated by the numeral 5. The rearward ends of the handles terminate in grip portions 6.

A Wheel 1 is disposed intermediate the arms 4 and is carried by an axle 8 journaled in the arms 4.

Support legs 9 are connected to the arms 4 adjacent the grip portion 6 and are strengthened by diagonal braces I0. The support legs 9 will enable the chassis to maintain a substantially horizontal position when thedevice is at rest as indicated clearly in Figure 2.

The insecticide drum 2 is disposed within a substantially U-shaped support member II that is attached to vertical sup orting arms I2 associated with the frame I.- Outlets l3 are provided on the upper portion of the drum and a flexible conduit I4 is attached to each outlet. A pipe l5 extends into the interior of the drum and is attached to the outlet I 3 to permit the liquid insecticide to flow from the drum into the flexible conduit l4. Moreover, control valves designated I6 are provided adjacent the outlets l3 to control the flow of insecticide through the flexible tube M. In addition, the discharge end of theflexible-conduit I4 is provided with a spray nozzle of any desired construction (not shown). Knuckle joints I! are attached to the frame I and tube Id at [8 and I9, respectively, to permit the tube toassume the desired position. Manifestly, the flexible tube, in connection with the knuckle joint, will permit the operator of the device to set the tube at the desired location for spraying the particular substance in question and no further action is necessary on his part to assure a uniform spraying.

As previously indicated, an important feature of the present invention is the provision of a device for creating air pressure within the tank 2, and to accomplish this purpose, the air pressure creating arrangement 3 is disposed adjacent the tank 2. The device 3 comprises a cylinder 20 that is carried by the frame I on, a support 2|. A piston rod 22 provided with a piston head (not shown) is adapted to reciprocate in the cylinder 20 and an operating handle 23 is resecticide tank or drum 2 and a device for cremovably secured to the upper end of the rod 22 by bolts or the like 24. The piston rod extends through an aperture 25 formed in a crossarm 26 of a frame designated generally 21. The frame 2! also comprises .a pair of vertical arms 28 that are suitably secured to the cross-arm 26 at their upper ends andthe lower endsof the arms are secured to a collar 29 that encircles the cylinder 23. The collar 29 is, of course, of such diameter that it is free to move up and down.

In Figure 4 it can be seen'that a screw or the like 30 is enthreaded in an aperture formed in the cross-arm 26 and also extends into a second aperture formed in the piston rod 22. It will be readily appreciated that when the screw 30 is rotated to a point where it projects into the aperture in the piston rod that the piston rod, will move in unison with the frame 21 as will later be more fully discussed. On the other hand; when the screw 30 is removed from the aperture in the piston rod 22, the piston rod is free to reciprocate in the bore formed in the cross-arm 26 when the handle 23 is manually actuated by the operator.

In order to reciprocate the piston rod 22 automatically the following arrangement is provided. An elongated link 32 (see Figure 3) is attached at its upper endtoone of the arms 28 as shown by the numeral 33. The opposite end of the link 32 is connected to a crank 34.,as depicted at 35. The crank is journaled'at its ends in the arms 4 as shown by the numeral 36.

In order to transmit movement to the crank 34, I provide a sprocket 31 that is mounted on the front axle 8. A second sprocket 38 is, associated with the crank 34 and a driving chain 33 is trained over the sprockets 31 and 38, respectively. Obviously, when the frame I is moved and rotary movement thus imparted to the wheel I, theaxle 8 will be rotated thereby transmitting movement to the crank 34 through the driving connection above described." The link 32 by virtue of its connection to the crank 34 will. likewise be moved and as thelink is connected to the frame 23, the piston rod 22, due to its connection to the frame, will be reciprocated in the cylinder 23. It is believed readily apparent that so long as the frame'is being moved, reciprocatory movement will be transmitted to the piston rod ,22 thereby creatingthe necessary air pressure.

In the event, however, it is desirednot to operate the piston rod 22 while the chassis is being moved, I mount a clutch 40 on the front :axle 3 adjacent the sprocket 31. An operating'lever M is connected to. the clutch 40 and the free end and inlet ports 43 and 44, respectively. Pipes,

designated 45-are attached to the connections 53 and 44 and also communicate with the interior of thedrum 2 as shown at 45. In addition, I also associate a gage 41 with the drum 2 to provide a visible means to enable the operator to determine the pressure within the drum 2.

As previously adverte'd to, manual control of the piston rod 22 can be accomplished by actuation of the screw 30. Referringnow to Figure 4, it will be noted that by rotating the screw to re I move the shank from the aperture in the piston rod 22, the rod will no longer be operatively connected with the frame 28 but is free to reciprocate in the bore formed in the cross-arm 23. -Manifestly,,the operator can reciprocate the and manually maintaining the desired air pressure within the insecticide tank.

While I have shown and described the preferred embodiment of my invention, I wish it to be understood that I do not confine myself to the precise details of construction herein set forth by way of illustration, as it is apparent that many changes and variations may be made therein, by those skilled in the art, without departing from the spirit of the invention, or exceeding the scope of the appended claims.

I claim: 7

1. In a vehicle of the character herein set forth, a pair of arms, an axle journaled in the arms adjacent one end thereof, a handle at the opposite end of each arm, a ground engaging wheel supported by the axle intermediate the arms, legs carried'by the arms adjacent to the handles for supporting the vehicle, a tank sup ported by the arms, a bracket mounted on the arms, a cylinder mounted on the bracket and in communication with the tank, a piston mounted for movement in the cylinder, a frame supported for sliding movement on the cylinder and operatively connected to the piston, a crank journaled in the arms rearwardly of the cylinder, a link having one end attached to the frame and the opposite end connected to the crank, a sprocket mounted on the crank, a second sprocket mounted on the axle, a chain trained around said sprockets whereby movement of the wheel will be transmitted to the crank thereby imparting movement to the piston, a clutch carried by the axle and a clutch operating lever extending to a point adjacent to one of the handles for engaging and disengaging the clutch.

2. In a Vehicle of the character herein set forth, a pair of arms converging at one end, an axle journaled in the arms at the converging end, a handle at the opposite end of each arm, a ground engaging wheel supported by the axle intermediate the arms, legs carried by the arms adjacent to the handles for supporting the vehicle, a tank supported by the arms, a bracket mounted on the arms, a, cylinder mounted on the bracket and in communication with the tank,

trained around said sprockets whereby-movement of the wheel will be transmitted to the crank thereby imparting movement to the piston, a clutch carried by the axle and a clutch operating lever extending to a point adjacent to one of the handles for engaging and disengaging the clutch.

- 3. In a vehicle of the character herein set forth, a pairofarms, an axle journaled in the arms adjacent one end thereof, a' ground engagingwheel supported by'the axle, a tank subported by the arms, a bracket mounted on the arms, a cylinder supported on the bracket and in communication with the tank, a piston mounted for movement in the cylinder, a frame supported for sliding movement on the cylinder and operatively connected to the piston, a crank journaled in the arms rearwardly of the cylinder, a link having one end attached to the frame and the opposite end connected to the crank, a sprocket mounted on the crank, a second sprocket mounted on the axle, and a chain trained around said sprockets whereby movement of the wheel will be transmitted to the crank thus imparting movement to the piston.

JUDSON A. PERRY. 

